A method and system for analyzing power supply modes of dual-power users

Abstract

The present invention discloses a method and system for analyzing the power supply mode of a dual-power user, the method comprising: acquiring equipment information and system information in a distribution network; analyzing a CIM model by means of an analytical technique to obtain distribution network graph model topology relationship information; performing data analysis and processing on the CIM model based on the distribution network graph model topology relationship information to establish a dual-power user data model; distinguishing the dual-power user and its main and standby power supply lines based on the CIM model and equipment information using the dual-power user data model; identifying the power supply mode of the dual-power user and judging the power supply line to which the dual-power user belongs; determining the optimal operating mode of the dual-power user according to the load condition of the main and standby power supply lines to which the dual-power user belongs, so as to enable the main and standby power supply lines to which the dual-power user belongs to operate at a normal load rate; and monitoring the switching condition of the dual-power user by acquiring the real-time current of the switches of the main and standby power supply lines to which the dual-power user belongs.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power grids, and in particular to a method and system for analyzing power supply modes of dual-power users. Background Art

[0002] In recent years, with the development and progress of the economy and society, the scale of power grid construction has expanded significantly, and people have put forward higher requirements for the reliability and stability of the power network. In order to ensure the reliability of power supply to users, most urban users have met the dual power supply requirements.

[0003] However, power supply companies currently face at least the following problems in managing dual power users:

[0004] 1. The existing statistical method for dual power user records mainly relies on manual query and analysis from multiple systems. Manual screening is time-consuming and prone to errors.

[0005] Second, there is a lack of effective monitoring methods for load switching of dual-power users, making it impossible to accurately determine the power supply source of users. Especially during peak load periods, when adjusting the load of dual-power users on overloaded lines, it is often impossible to accurately understand whether users have switched loads as required, which has brought a passive situation to the operation of the power grid and orderly power consumption. Summary of the Invention

[0006] In response to the above-mentioned problems in the prior art, the purpose of the present invention is to provide a method and system for analyzing the power supply mode of dual-power users, so as to accurately identify dual-power users and automatically generate a dual-power user ledger, so as to timely control the line switching status of dual-power users.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] In a first aspect, an embodiment of the present invention provides a method for analyzing a power supply mode of a dual-power user, comprising the following steps:

[0009] S1, obtain device information and system information in the distribution network;

[0010] S2, analyzing the CIM model through graph model analysis technology to obtain the distribution network graph model topology relationship information;

[0011] S3, based on the topological relationship information of the distribution network diagram, conducts data analysis and processing on the CIM model to establish a dual power user data model;

[0012] S4, based on the CIM model and device information, using the dual power user data model, identifies the dual power users and their primary and backup power lines;

[0013] S5, identifying the power supply mode of the dual-power user and determining the power supply line to which the dual-power user belongs;

[0014] S6, determining an optimal operation mode for the dual power user based on the load conditions of the primary and backup power supply lines belonging to the dual power user, so as to enable the primary and backup power supply lines belonging to the dual power user to operate at a normal load rate;

[0015] S7, monitors the switching status of the dual power users by obtaining the real-time current of the switches of the main and standby power lines to which the dual power users belong.

[0016] Furthermore, the system information includes the CIM model and homologous ledger data of the homologous maintenance system, the switch opening and closing status data of the distribution automation system, the archival data of the marketing system, and the meter data of the procurement system.

[0017] Furthermore, the S3 includes the following specific steps:

[0018] S301, dividing the CIM model based on the topological relationship information of the distribution network graph model and the classes, relationships and attributes defined in the CIM model;

[0019] S302, analyzing, combing, extracting, and cleaning the CIM model data to complete the model file data processing;

[0020] S303: Construct a dual power user data model based on the processed model file data.

[0021] Furthermore, the S4 includes the following specific steps:

[0022] S401, based on the homologous ledger data in the system information and the marketing system archive data, the CIM model is parsed using a diagram parsing technology to obtain a parsed primary wiring diagram file;

[0023] S402: Convert the parsed primary wiring diagram file into devices and terminals, and overlay the switch status of the distribution automation system. Starting from the outgoing line switch, connect the terminals to the devices. The terminal connection relationship of different devices is topologically analyzed layer by layer, and the power supply path is traced until the device with the switch status disconnected is reached to obtain the connection relationship of the line device elements.

[0024] S403: Based on the device information and the connection relationship between the line equipment elements, the topological structure of the line equipment elements is obtained. The topological hierarchical relationship of the outgoing line switches, line segments, towers, switches, ring main units, and distribution transformer equipment element nodes is sorted out, and a topological hierarchical linear matrix is ​​constructed to describe the connectivity at different levels in the topological space.

[0025] Step S404 : searching for dual power users through the dual power user data model and the topology level linear matrix.

[0026] Furthermore, the specific steps of S404 include:

[0027] Using a dual power user data model and a topology-level linear matrix, find all power distribution facilities and their associated lines with incoming and outgoing switches; the power distribution facilities include distribution rooms and box-type substations;

[0028] If the lines associated with the incoming and outgoing switches are not the same line, the power distribution facility to which the incoming and outgoing switches belong is considered a dual power user, and the primary and backup power lines to which the dual power user belongs are recorded;

[0029] Perform a topological analysis on the dual-power distribution facilities. If there is a lower-level distribution transformer or distribution room supplied by the dual-power distribution facilities, then the lower-level distribution transformer or distribution room is a dual-power user.

[0030] Furthermore, the S5 includes the following specific steps:

[0031] S501, based on the marketing system archive data in the system information, identifying the power supply mode of the dual power user to distinguish the public-private transformer user attributes of the dual power user;

[0032] S502: When the dual-power user is a public transformer user, the public transformer user's incoming line switch is found by superimposing the public transformer user's load data, and the current of the incoming line switch is monitored. If current flows through the incoming line switch, the public transformer user is powered by the feeder to which the incoming line switch belongs.

[0033] S503: When the dual power user is a dedicated transformer user, current data of two high-voltage power supply and high-voltage metering first-level metering points are obtained and the feeders where the two metering points are located are analyzed. If current flows through both metering points, it means that the dedicated transformer user is supplied by the feeders where the two metering points are located.

[0034] Furthermore, the S6 includes the following specific steps:

[0035] S601, according to the heavy overload rule, obtain the heavy overload line of the previous day;

[0036] The heavy load rule is that if the load rate of the line exceeds 70% and is less than 100% at four consecutive sampling points, the line is considered to be a heavy load line; the overload rule is that if the load rate of the line exceeds 100% at four consecutive sampling points, the line is considered to be an overload line;

[0037] S602: Obtain the incoming switches of the main and backup power supply lines for dual-power users on the heavily overloaded line, the primary metering points of the main and backup power supply lines for dual-power dedicated transformer users, and the currents from the previous 7 days to the previous day.

[0038] S603: Calculate the load percentage of the power supply line to which the dual-power user belongs based on the time when the maximum load rate of the heavily overloaded line occurred yesterday.

[0039] S604, sort the load proportions of the power supply lines belonging to dual-power users on heavily overloaded lines, and adjust the current after the dual-power users switch lines. The optional scheme is to ensure that the maximum load rate of the two lines does not exceed 80% from the first 7 days to the first day after the switching, and the preferred scheme is to have the lowest load rate of the heavily overloaded line after the switching.

[0040] Furthermore, the S7 includes the following specific steps:

[0041] By obtaining the real-time current of the incoming switches of the main and backup power supply lines of the dual-power user, judgment is made with the preset time length as the time node. If the current status of the main and backup power supply lines of the dual-power user at the next time node is opposite to the current status at the current time node, it is considered that the dual-power user has a power supply line load switching at the next time node.

[0042] In a second aspect, an embodiment of the present invention provides a dual-power user power supply mode analysis system, comprising:

[0043] Information acquisition module, used to obtain equipment information and system information in the distribution network;

[0044] Model parsing module, used to analyze the CIM model through graph-model parsing technology to obtain the distribution network graph-model topology relationship information;

[0045] The model building module is used to analyze and process the CIM model data based on the topological relationship information of the distribution network diagram and establish a dual power user data model;

[0046] The user identification module is used to identify dual power users and their primary and backup power lines based on the CIM model and device information and the dual power user data model;

[0047] A line judgment module is used to identify the power supply mode of a dual-power user and determine the power supply line to which the dual-power user belongs;

[0048] The line operation module is used to determine the optimal operation mode of the dual power user according to the load conditions of the main and backup power lines of the dual power user, so as to ensure that the main and backup power lines of the dual power user operate at a normal load rate;

[0049] The user monitoring module is used to monitor the switching status of dual power users by obtaining the real-time current of the incoming switches of the main and standby power supply lines belonging to the dual power users.

[0050] In a third aspect, an embodiment of the present invention provides a readable storage medium storing a computer program, wherein the computer program is invoked by a processor to implement:

[0051] The steps of the method for analyzing the power supply mode of a dual-power user are as described above.

[0052] The beneficial effects brought about by the embodiments provided by the present invention include:

[0053] The present invention establishes a dual-power user data model, combines it with multi-dimensional system data, can accurately identify dual-power users, and automatically generate a user ledger for dual-power users, so as to accurately grasp the line switching status of dual-power users and the power supply lines in the substation area, reduce the time cost of staff in verifying information, improve work effectiveness, and reduce the burden on front-line employees. By identifying the power supply lines where dual-power users are located and combining them with the single-line diagram of the distribution network, the present invention makes the functions of power outage information notification, fault analysis, line loss data analysis, and orderly power consumption more accurate, improves the quality and efficiency of on-site service work, and enhances the corporate service image. The present invention only needs to input the name of the heavily overloaded line to query the relevant information of all dual-power users on the line, and refreshes it in real time according to data changes, greatly shortening the adjustment decision time of dual-power users, and is simple to operate and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0055] Figure 1 A schematic flow chart of a method for analyzing a dual-power user power supply mode provided by an embodiment of the present invention;

[0056] Figure 2 This is a structural block diagram of a dual-power user power supply mode analysis system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0058] However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known technologies are omitted to avoid unnecessarily confusing the concepts of the present disclosure.

[0059] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The term "comprising" used herein indicates the presence of features, steps, operations, but does not exclude the presence or addition of one or more other features. It should be noted that all terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used here should be interpreted as having meanings consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0060] Some block diagrams and / or flow charts are shown in the accompanying drawings. It should be understood that some blocks in the block diagrams and / or flow charts or their combinations can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that these instructions, when executed by the processor, can create a device for implementing the functions / operations described in these block diagrams and / or flow charts. The technology of the present disclosure can be implemented in the form of hardware and / or software (including firmware, microcode, etc.). In addition, the technology of the present disclosure can take the form of a computer program product on a computer-readable storage medium having instructions stored thereon, which can be used by an instruction execution system or in combination with an instruction execution system.

[0061] Currently, users have the following dual power supply modes:

[0062] 1. Substations in different directions use dedicated power supply lines. The two power sources provide mutual support and backup. Either power source can carry full load, and an automatic switching device for the backup power source should be configured as much as possible.

[0063] 2. Substations in different directions are supplied with one dedicated line and one ring network / radiating public network. The dedicated line is the main supply and the public network hot standby is used. When the main power supply fails, the public network hot standby power supply is automatically switched. The two power supplies should be equipped with reliable electrical and mechanical locking devices.

[0064] 3. Two ring network public power supply lines are connected to the substation in different directions. Dual power supplies are used, each with a transformer. The low-voltage busbar is operated in sections. The dual power supplies supply and backup each other. Each transformer is required to be able to carry at least all the first and second level loads during peak load.

[0065] 4. The substation has two radiating public grid power supply lines in different directions. The dual power supplies adopt bus segmentation and operate in mutual supply and standby mode. The public grid hot standby power supply is automatically switched on and off. The two power supplies should be equipped with reliable electrical and mechanical locks.

[0066] 5. Different busbars in the same substation have one dedicated line and one radiating public grid power supply. When the user does not have the conditions for substations from two directions and has higher reliability requirements, the dedicated line main supply and public grid hot standby operation mode can be adopted. After the main power supply fails, the public grid hot standby power supply will be automatically switched. The two power supplies should be equipped with reliable electrical and mechanical locking devices.

[0067] 6. The same substation has two radiating public grid power supplies from different busbars. Since it involves some high-risk users in remote locations, the incoming power supply can adopt a single busbar segmentation and mutual supply and backup operation mode; the public grid hot backup power supply is required to be automatically switched, and the two power supplies should be equipped with reliable electrical and mechanical locking devices.

[0068] Example 1

[0069] like Figure 1 As shown, an embodiment of the present invention provides a method for analyzing a power supply mode of a dual-power user, comprising the following steps:

[0070] S1, obtain device information and system information in the distribution network;

[0071] In some embodiments, the system information includes the CIM model and homologous ledger data of the homologous maintenance system, the switch opening and closing status data of the distribution automation system, the archival data of the marketing system, and the meter data of the procurement system.

[0072] Specifically, the CIM model (Common Information Model) is a general information model used to describe and manage energy systems.

[0073] S2, analyzing the CIM model through graph model analysis technology to obtain the distribution network graph model topology relationship information;

[0074] In some embodiments, S2 includes the following specific steps:

[0075] Receive change messages pushed by the same source maintenance system model center and obtain CIM models in real time

[0076] The CIM model is analyzed through the graph model analysis technology to obtain the distribution network graph model topology relationship information.

[0077] Specifically, this embodiment uses the graph-model parsing technology to parse the topology package in the CIM model and obtain the distribution network graph-model topology relationship information.

[0078] S3, based on the topological relationship information of the distribution network diagram, conducts data analysis and processing on the CIM model to establish a dual power user data model;

[0079] In some embodiments, S3 includes the following specific steps:

[0080] S301, dividing the CIM model based on the topological relationship information of the distribution network graph model and the classes, relationships and attributes defined in the CIM model;

[0081] S302, analyzing, combing, extracting, and cleaning the CIM model data to complete the model file data processing;

[0082] S303: Construct a dual power user data model based on the processed model file data.

[0083] S4, based on the CIM model and device information, using the dual power user data model, identifies the dual power users and their primary and backup power lines;

[0084] In this embodiment, the main and backup power supply lines of the dual-power user include the main power supply line of the dual-power user and the backup power supply line of the dual-power user.

[0085] In some embodiments, the step S4 includes the following specific steps:

[0086] S401, based on the homologous ledger data in the system information and the marketing system archive data, the CIM model is parsed using a diagram parsing technology to obtain a parsed primary wiring diagram file;

[0087] Specifically, this embodiment parses the distribution network diagram model topology relationship information based on the CIM model, and generates a distribution network primary wiring diagram file based on the distribution network diagram model topology relationship information; this embodiment provides detailed device information and connection relationships through the primary wiring diagram file, which is convenient for finding specific equipment, specific parameters, or performing equipment fault troubleshooting and maintenance operations.

[0088] S402: Convert the parsed primary wiring diagram file into devices and terminals, and overlay the switch status of the distribution automation system. Starting from the outgoing line switch, connect the terminals to the devices. The terminal connection relationship of different devices is topologically analyzed layer by layer, and the power supply path is traced until the device with the switch status disconnected is reached to obtain the connection relationship of the line device elements.

[0089] S403: Based on the device information and the connection relationship between the line equipment elements, the topological structure of the line equipment elements is obtained. The topological hierarchical relationship of the outgoing line switches, line segments, towers, switches, ring main units, and distribution transformer equipment element nodes is sorted out, and a topological hierarchical linear matrix is ​​constructed to describe the connectivity at different levels in the topological space.

[0090] Step S404 : searching for dual power users through the dual power user data model and the topology level linear matrix.

[0091] Exemplarily, the specific steps of S404 include:

[0092] Using a dual power user data model and a topology-level linear matrix, find all power distribution facilities and their associated lines with incoming and outgoing switches; the power distribution facilities include distribution rooms and box-type substations;

[0093] If the lines associated with the incoming and outgoing switches are not the same line, the power distribution facility to which the incoming and outgoing switches belong is considered a dual power user, and the primary and backup power lines to which the dual power user belongs are recorded;

[0094] Perform a topological analysis on the dual-power distribution facilities. If there is a lower-level distribution transformer or distribution room supplied by the dual-power distribution facilities, then the lower-level distribution transformer or distribution room is a dual-power user.

[0095] S5, identifying the power supply mode of the dual-power user and determining the power supply line to which the dual-power user belongs;

[0096] In some embodiments, the step S5 includes the following specific steps:

[0097] S501, based on the marketing system archive data in the system information, identifying the power supply mode of the dual power user to distinguish the public-private transformer user attributes of the dual power user;

[0098] S502: When the dual-power user is a public transformer user, the public transformer user's incoming line switch is found by superimposing the public transformer user's load data, and the current of the incoming line switch is monitored. If current flows through the incoming line switch, the public transformer user is powered by the feeder to which the incoming line switch belongs.

[0099] S503: When the dual power user is a dedicated transformer user, current data of two high-voltage power supply and high-voltage metering first-level metering points are obtained and the feeders where the two metering points are located are analyzed. If current flows through both metering points, it means that the dedicated transformer user is supplied by the feeders where the two metering points are located.

[0100] S6, determining an optimal operation mode for the dual power user based on the load conditions of the primary and backup power supply lines belonging to the dual power user, so as to enable the primary and backup power supply lines belonging to the dual power user to operate at a normal load rate;

[0101] In some embodiments, the S6 includes the following specific steps:

[0102] S601, according to the heavy overload rule, obtain the heavy overload line of the previous day;

[0103] For example, the heavy overload rule is that if the load rate of the line exceeds 70% at four consecutive sampling points, the line is considered to be a heavy overload line;

[0104] Among them, the line overload standard is that the minimum load rate among four consecutive sampling points is 100% or above; the line heavy load standard is that the minimum load rate among four consecutive sampling points is between 70% and 100% (that is, greater than or equal to 70% and less than 100%); the normal standard is that the minimum load rate among four consecutive sampling points is between 20% and 70% (that is, greater than or equal to 20% and less than 70%); the light load standard is that the minimum load rate among four consecutive sampling points is between 0% and 20% (that is, greater than or equal to 0% and less than 20%);

[0105] S602: Obtain the incoming switches of the main and backup power supply lines for dual-power users on the heavily overloaded line, the primary metering points of the main and backup power supply lines for dual-power dedicated transformer users, and the currents from the previous 7 days to the previous day.

[0106] S603: Calculate the load percentage of the power supply line to which the dual-power user belongs based on the time when the maximum load rate of the heavily overloaded line occurred yesterday.

[0107] S604, sort the load proportions of the power supply lines belonging to dual-power users on heavily overloaded lines, and adjust the current after the dual-power users switch lines. The optional scheme is to ensure that the maximum load rate of the two lines does not exceed 80% from the first 7 days to the first day after the switching, and the preferred scheme is to have the lowest load rate of the heavily overloaded line after the switching.

[0108] S7, monitors the switching status of the dual power users by obtaining the real-time current of the switches of the main and standby power lines to which the dual power users belong.

[0109] In some embodiments, the step S7 includes the following specific steps:

[0110] By obtaining the real-time current of the incoming switches of the main and backup power supply lines of the dual-power user, and making a judgment with the preset time length as the time node, if the current status of the main and backup power supply lines of the dual-power user at the next time node are respectively opposite to the current status at the current time node, it is defined that the dual-power user will have a power supply line load switching at the next time node.

[0111] Specifically, the judgment is made at a point of 15 minutes. If the current of the main supply line of the dual-power user changes from non-zero to zero at the next point, and at the same time, the backup supply line of the dual-power user changes from zero to non-zero at the next point, then it is defined that the dual-power user has a power supply line load switching at this point.

[0112] Example 2

[0113] like Figure 2 As shown, an embodiment of the present invention provides a dual-power user power supply mode analysis system 100, including:

[0114] Information acquisition module 101, used to obtain device information and system information in the distribution network;

[0115] A model analysis module 102 is used to analyze the CIM model using a graph-model analysis technique to obtain distribution network graph-model topology relationship information;

[0116] The model building module 103 is used to perform data analysis and processing on the CIM model based on the topological relationship information of the distribution network diagram model to establish a dual power user data model;

[0117] The user identification module 104 is used to identify dual power users and their respective primary and backup power lines based on the CIM model and device information and using the dual power user data model;

[0118] The line determination module 105 is used to identify the power supply mode of the dual-power user and determine the power supply line to which the dual-power user belongs;

[0119] The line operation module 106 is used to determine the optimal operation mode of the dual power user according to the load conditions of the main and backup power lines of the dual power user, so as to enable the main and backup power lines of the dual power user to operate at a normal load rate;

[0120] The user monitoring module 107 is used to monitor the switching status of the dual power users by acquiring the real-time current of the incoming switches of the main and standby power supply lines to which the dual power users belong.

[0121] Example 3

[0122] An embodiment of the present invention provides a readable storage medium storing a computer program, wherein the computer program is invoked by a processor to implement:

[0123] The steps of the dual-power user power supply mode analysis method as described in Example 1.

[0124] It should be noted that the computer-readable storage medium of the present embodiment may be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0125] In this embodiment, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. Furthermore, in this embodiment, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable storage medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on a computer-readable storage medium may be transmitted using any suitable medium, including but not limited to wires, optical cables, RF (radio frequency), etc., or any suitable combination thereof.

[0126] The computer readable storage medium can be written in one or more programming languages ​​or a combination thereof to execute the computer program for performing the present embodiment, including object-oriented programming languages ​​such as Python, Java, C++, and conventional procedural programming languages ​​such as C or similar programming languages. The program can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect via the Internet).

[0127] In summary, the present invention establishes a dual-power user data model, which is of great significance for shortening the adjustment time of the dual-power operation mode of the distribution network line. The logic of manual experience screening of dual-power users is converted into an algorithm model, and multi-dimensional system information is used to automatically generate the basic ledger information of the power supply company's public transformer dual power and special transformer dual power (including the ledger of the area, the affiliated line, and the switch), so as to accurately grasp the line switching situation and power supply line of the dual-power user. The business departments such as marketing, distribution network and dispatching can directly grasp the connection situation of the on-site users, reduce the number of times the staff goes back and forth to the site for verification, save time cost, paper cost and vehicle operation cost, shorten time, improve work effectiveness, improve operating efficiency, and reduce the burden on front-line employees. The present invention can accurately identify the power supply line where the dual-power user is located, and combined with the use of the distribution network single-line diagram, it makes the power outage information notification, fault analysis, line loss data analysis and orderly power use more accurate, improves the quality and efficiency of on-site service work, and enhances the corporate service image. When the present invention is used in actual applications, it is only necessary to input the name of the overloaded line and then query. The power supply, non-power supply side power supply line name, etc. of all dual-power users on the line are displayed in the interface at one time, and are refreshed in real time according to data changes. This puts an end to the traditional situation where dispatchers have to spend a long time looking for paper drawings when making dual-power user adjustment decisions, and the user power supply needs to be repeatedly checked with the high-voltage electricity inspection team. There is no need for redundant operations, which greatly shortens the dual-power user adjustment decision time. The operation is simple and easy to use and maintain.

[0128] The foregoing description is merely a preferred embodiment of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and all variations that come within the meaning and range of equivalents of the claims are intended to be included within the present invention.

Claims

1. A method for analyzing the power supply mode of a dual-power user, characterized in that: The following steps are involved: S1, obtain device information and system information in the distribution network; S2, analyzing the CIM model through graph model analysis technology to obtain the distribution network graph model topology relationship information; S3, based on the topological relationship information of the distribution network diagram, conducts data analysis and processing on the CIM model to establish a dual power user data model; S4, based on the CIM model and device information, using the dual power user data model, identifies the dual power users and their primary and backup power lines; S5, identifying the power supply mode of the dual-power user and determining the power supply line to which the dual-power user belongs; S6, determining an optimal operation mode for the dual power user based on the load conditions of the primary and backup power supply lines belonging to the dual power user, so as to enable the primary and backup power supply lines belonging to the dual power user to operate at a normal load rate; S7, monitors the switching status of the dual power users by obtaining the real-time current of the switches of the main and standby power lines to which the dual power users belong.

2. The method according to claim 1, characterized in that The system information includes the CIM model and homologous ledger data of the homologous maintenance system, the switch opening and closing status data of the distribution automation system, the archival data of the marketing system, and the meter data of the procurement system.

3. The method according to claim 1, characterized in that The S3 includes the following specific steps: S301, dividing the CIM model based on the topological relationship information of the distribution network graph model and the classes, relationships and attributes defined in the CIM model; S302, analyzing, combing, extracting, and cleaning the CIM model data to complete the model file data processing; S303: Construct a dual power user data model based on the processed model file data.

4. The method according to claim 1, wherein The S4 includes the following specific steps: S401, based on the homologous ledger data in the system information and the marketing system archive data, the CIM model is parsed using a diagram parsing technology to obtain a parsed primary wiring diagram file; S402: Convert the parsed primary wiring diagram file into devices and terminals, and overlay the switch status of the distribution automation system. Starting from the outgoing line switch, connect the terminals to the devices. The terminal connection relationship of different devices is topologically analyzed layer by layer, and the power supply path is traced until the device with the switch status disconnected is reached to obtain the connection relationship of the line device elements. S403: Based on the device information and the connection relationship between the line equipment elements, the topological structure of the line equipment elements is obtained. The topological hierarchical relationship of the outgoing line switches, line segments, towers, switches, ring main units, and distribution transformer equipment element nodes is sorted out, and a topological hierarchical linear matrix is ​​constructed to describe the connectivity at different levels in the topological space. Step S404 : searching for dual power users through the dual power user data model and the topology level linear matrix.

5. The method according to claim 4, characterized in that The specific steps of S404 include: Using a dual power user data model and a topology-level linear matrix, find all power distribution facilities and their associated lines with incoming and outgoing switches; the power distribution facilities include distribution rooms and box-type substations; If the lines associated with the incoming and outgoing switches are not the same line, the power distribution facility to which the incoming and outgoing switches belong is considered a dual power user, and the primary and backup power lines to which the dual power user belongs are recorded; Perform a topological analysis on the dual-power distribution facilities. If there is a lower-level distribution transformer or distribution room supplied by the dual-power distribution facilities, then the lower-level distribution transformer or distribution room is a dual-power user.

6. The method according to claim 1, characterized in that The S5 includes the following specific steps: S501, based on the marketing system archive data in the system information, identifying the power supply mode of the dual power user to distinguish the public-private transformer user attributes of the dual power user; S502: When the dual-power user is a public transformer user, the public transformer user's incoming line switch is found by superimposing the public transformer user's load data, and the current of the incoming line switch is monitored. If current flows through the incoming line switch, the public transformer user is powered by the feeder to which the incoming line switch belongs. S503: When the dual power user is a dedicated transformer user, current data of two high-voltage power supply and high-voltage metering first-level metering points are obtained and the feeders where the two metering points are located are analyzed. If current flows through both metering points, it means that the dedicated transformer user is supplied by the feeders where the two metering points are located.

7. The method according to claim 1, characterized in that The S6 includes the following specific steps: S601, according to the heavy overload rule, obtain the heavy overload line of the previous day; The heavy load rule is that if the line load rate exceeds 70% and is less than 100% at four consecutive sampling points, the line is considered to be a heavy load line. The overload rule is that if the line load rate exceeds 100% at four consecutive sampling points, the line is considered to be an overload line. S602: Obtain the incoming switches of the main and backup power supply lines for dual-power users on the heavily overloaded line, the primary metering points of the main and backup power supply lines for dual-power dedicated transformer users, and the currents from the previous 7 days to the previous day. S603: Calculate the load percentage of the power supply line to which the dual-power user belongs based on the time when the maximum load rate of the heavily overloaded line occurred yesterday. S604, sort the load proportions of the power supply lines belonging to dual-power users on the heavily overloaded lines, and adjust the current after the dual-power users switch lines. The candidate plans are those in which the maximum load rates of the two lines in the first 7 days to the first day after the switching do not exceed 80%. Among the candidate plans, the plan with the lowest load rate of the heavily overloaded line after the switching is selected as the optimal operating mode.

8. The method according to claim 1, characterized in that The S7 includes the following specific steps: By obtaining the real-time current of the incoming switches of the main and backup power supply lines of the dual-power user, judgment is made with the preset time length as the time node. If the current status of the main and backup power supply lines of the dual-power user at the next time node is opposite to the current status at the current time node, it is considered that the dual-power user has a power supply line load switching at the next time node.

9. A dual power supply user power supply mode analysis system, characterized in that: include: Information acquisition module, used to obtain equipment information and system information in the distribution network; Model parsing module, used to analyze the CIM model through graph-model parsing technology to obtain the distribution network graph-model topology relationship information; The model building module is used to analyze and process the CIM model data based on the topological relationship information of the distribution network diagram and establish a dual power user data model; The user identification module is used to identify dual power users and their primary and backup power lines based on the CIM model and device information and the dual power user data model; A line judgment module is used to identify the power supply mode of a dual-power user and determine the power supply line to which the dual-power user belongs; The line operation module is used to determine the optimal operation mode of the dual power user according to the load conditions of the main and backup power lines of the dual power user, so as to ensure that the main and backup power lines of the dual power user operate at a normal load rate; The user monitoring module is used to monitor the switching status of dual power users by obtaining the real-time current of the incoming switches of the main and standby power supply lines belonging to the dual power users.

10. A readable storage medium, characterized in that: A computer program is stored, which is called by a processor to implement: The steps of the method for analyzing the power supply mode of a dual-power user as described in any one of claims 1-8.

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